mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-28 04:35:33 +00:00
c7bb459c9e
Currently only handle metadata decoding. MozReview-Commit-ID: JL4vqtY5kUS --HG-- extra : rebase_source : 9cad10afb3174f67a78ea4418df5eb64fa1c83b1
60 lines
1.6 KiB
C++
60 lines
1.6 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef FLAC_FRAME_PARSER_H_
|
|
#define FLAC_FRAME_PARSER_H_
|
|
|
|
#include "mozilla/Maybe.h"
|
|
#include "nsAutoPtr.h"
|
|
#include "MediaDecoder.h" // For MetadataTags
|
|
#include "MediaInfo.h"
|
|
|
|
namespace mozilla
|
|
{
|
|
|
|
class OpusParser;
|
|
|
|
// Decode a Flac Metadata block contained in either a ogg packet
|
|
// (https://xiph.org/flac/ogg_mapping.html) or in flac container
|
|
// (https://xiph.org/flac/format.html#frame_header)
|
|
|
|
class FlacFrameParser
|
|
{
|
|
public:
|
|
FlacFrameParser();
|
|
|
|
bool IsHeaderBlock(const uint8_t* aPacket, size_t aLength) const;
|
|
bool DecodeHeaderBlock(const uint8_t* aPacket, size_t aLength);
|
|
bool HasFullMetadata() const { return mFullMetadata; }
|
|
// Return the duration in frames found in the block. -1 if error
|
|
// such as invalid packet.
|
|
int64_t BlockDuration(const uint8_t* aPacket, size_t aLength) const;
|
|
|
|
// Return a hash table with tag metadata.
|
|
MetadataTags* GetTags() const;
|
|
|
|
AudioInfo mInfo;
|
|
|
|
private:
|
|
bool ReconstructFlacGranulepos(void);
|
|
Maybe<uint32_t> mNumHeaders;
|
|
uint32_t mMinBlockSize;
|
|
uint32_t mMaxBlockSize;
|
|
uint32_t mMinFrameSize;
|
|
uint32_t mMaxFrameSize;
|
|
uint64_t mNumFrames;
|
|
bool mFullMetadata;
|
|
uint32_t mPacketCount;
|
|
|
|
// Used to decode the vorbis comment metadata.
|
|
nsAutoPtr<OpusParser> mParser;
|
|
|
|
};
|
|
|
|
}
|
|
|
|
#endif // FLAC_FRAME_PARSER_H_
|